Seam for wire-cloth



(No ModeL) J. SELLERS.

SEAM FOR WIRE CLOTH.

N0. 372, 335'.- Patented NoY. 1, 1.887.

K) R D H l I w a N 1 w. I i N W R v v R 5 I a I H l N 225 55;: l Izvzremar:

4 i R Q g gw UNITED STATES PATENT OFFICE.

JOSEPH J. SELLERS, OF PHILADELPHIA, PENNSYLVANIA.-

SEA M FOR WIRE-CLOTH.

SPECIFICATION forming part of Letters Patent No. 372,335, dated November1, 1887.

Application filed August 4, 1886.

.To all whom it may concern:

Be it known that I, JosEPH J. SELLERs, a citizen of the United States,and a resident of the city and county of Philadelphia and State ofPennsylvania, have invented an Improved Seam for Wire-Cloth, of whichthe" following joined, and then is a specification.

My invention relates to seams for wire-cloth, and more especially toseams for the cloth used in dandy-rolls, cylinders,'or fourdriniers inpaper-machines; and its object is to securely join the adjacent edges ofthe cloth and at the same time make a seam which shall have no wiresprojecting above the surface on one side of the fabric.

Heretofore in uniting the adjacent edges of wire-cloth it has beencommon practice to whip the edges of the cloth over and over and then toconnect the whipping-wires by another wire running through the loops ofthe whippingwires. These whipping-wires necessarily lie upon and projectbeyond the surface of the cloth on both sides, and when used in unitingthe seams of the woven-wire parts of papermachines, they cause marksupon the paper, which are objectionable. To overcome this difficulty ithas been proposed to form a series of loops in the binding-thread bylooping it around some of the meshes of the parts to be joining theloops by passing a wire through them. In this way some of the objectionsto the old way of uniting this wire were overcome; but. as the loopswere made some distance from the adjacent edges of the cloth, theseedges were liable to become loose and to bend or stick up, therebymaking an uneven seam, producing heavy marks on the paper, and as theedges became worn or frayed the seam was weakened or destroyed.

Myinvention consists in the manner of making seams in wire-cloth,substantially as here inafter set forth, whereby the edges are evenlyand securely united without any liability of becoming bent or frayed,thereby producing an improved wire-cloth which may be used fordandy-rolls, cylinders, fourdriniers, and the like.

In the accompanying drawing I have illustrated,on an enlarged scale, themethod of uniting the edges of two pieces of wire-cloth, A B,

' each having rectangular meshes formed by the Serial No.2l0,016. (Nomodel.)

longitudinal threads or wires 0 and the transforward and looping itaround another transverse wire, as D*, then back again around the firsttransverse wire, and so on, each alternate loop passing around the firsttransverse wire and the intermediate loops passing around one of theother transverse wires at a greater or less distance from the firstwire. In this way the whipping-wire is secured to the edge of the clothwithout projecting on one side of its surface. The two edges to bejoined having been similarly treated, they are brought together and theloops are connected by a wire, F, passing the loops formed around thefirst trans verse wire, D. In this way it will be seen that the edges ofthe wire-cloth are securely and closely joined, and the two pieces ofcloth are practically united in such a manner that there are noprojections formed by the whipping-wires upon one side of the cloth, andthe edges are prevented from being bent or projected outwardly to form arough or uneven surface. The whipping-wires preferably are not passedsuccessively around any one of the transverse wires except the first;but by properly arranging them over a greater or less number of wires aperfectly tight and smooth seam may be produced without warping ordistorting the cloth in any way. The bindingwires may be' secured in anydesired manner and the united sheets applied to any desired form ofmachine.

When it is desired to use this fabric on dandy-rolls and the like inmaking fine qualities of paper, where any marks would be obj ectionable,the fabric is secured to the frame of the roll with the seam on theinside, and the outside of the roll is therefore perfectly free from anyand all projections. When, however, in making paper it is not necessaryto prevent all marks being made on the paper, it is preferable to usethe fabric with the seam or overlying wires on the outside, as the marksmadeby my improved seam are at most very small, and the wear on the seamis less in this arrangement, as a perfectly smooth surface is brought incontact with the frame.

What I claim is- 1. The method of preparing the edges of wire-cloth,which consists in passing a whipping-thread alternately around the firsttransverse wire and another transverse wire, the whipping-thread passingover the intermediate transverse wires on one side thereof only,substantially as described.

2. A wire-cloth the edge of which is secured by a whipping-thread, thesaid whippingthread passing alternately around the first transverse wireand another transverse wire and passing over the intermediate transverse

